Hello, I'm setting up a test mailserver on centos4. I want to use stable rpm packages but ones that don't have conflicting lib requirements. I've got the standard yum configuration with one excdeption i've enabled the centosplus yum repository. I've read that dag's repository has a package i'm going to need courier so i figured to set that up. Here's my problem, if i then do a yum update on this box and more than one repository has a package say kernel which does it get? Or, if a package has a library dependency and that is installed and it conflicts with another, how would this be resolved? Sorry about the confusion any help appreciated. I'm also going to possibly have a need to roll out custom-made rpms not sure yet on that one, and it's been a while since i did them, rh7 i think was the last time. Does anyone have a Centos-specific howto on this not for modifying an existing srpm, but for creating an rpm from tarball? Thanks. Dave.